Stephen o



(Model.)

S. 0. PARKER.

Saw Vise.

No. 236,451. Patented Jan. 11,1881.

WITNESSES INVENTOR N. PETERS. FHOTO-LITHDGRAPNER WASHINGTON. D. C.

NITED STATES PATENT Erica.

STEPHEN O. PARKER, OF MERIDEN, CONNECTICUT, ASSIGNOR TO Tlllfl CHARLES PARKER COMPANY, OF SAME PLACE.

SAW-VISE.

SPECIFICATION forming part of Letters Patent No. 236,451, dated January 11, 1881.

Application filed'May 18,1880. (ModcL) To all whom it may concern Be it known that I, STEPHEN OLIN PARKER, a citizen of the United States, residing at Meriden, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Saw-Vises and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention has relation to devices for holding circular saws while the latter are undergoing the operation of filing the teeth. The objects of said invention are to adapt such de vices to saws of diflerent diameters and to preislerl've the set of the teeth while the saw is thus In the accompanying drawings, Figure 1 represents a perspective view of my improved vise with asaw clamped therein. Fig. 2 represents a front elevation of the rear jaw thereof, the frontjaw or disk and the clamping-nut having been removed. Fig. 3 represents a rear elevation, in detail, of the front jaw or disk, and Fig. 4 represents a perspective detail view of the clamping-screw and its elliptical block. A designates the rear jaw or binding-wall of the vise, which is provided with a rearwardly-extending base, A, and a long vertical recess or guideway, A This guideway extends from the front of the said jaw rather more than half-way through to the rear thereof, and a narrower central vertical slot, at, extends quite through from the back of said recess to the back of the jaw.

B designates a clamping screw or bolt, which is provided with a suitable handle, I), a flange, b, which sets against the back of jaw or wall A, a cylindrical part, D which sets within slot at, and an elliptic eccentrically-attached block, B, which sets within guideway A In front of this elliptic block said bolt or clampingscrew is provided with a hub, B from which the screw-threaded shank b of said bolt extends forward.

The parts b b b b B B, which together constitute bolt B, may all be made in one piece, as indicated in Fig. 4, in which case the slot to must be provided with an enlargement sufficiently great to allow the passage offlange b. The handle I) and flange b may, however, be made separate from the other portions of bolt B, and attached to the rear end thereof in any known manner after the said end has been passed back through said slot a.

C designates the movable front jaw of the vise. This jaw has preferably a'circular shape, and is provided with a central aperture to allow the passage of said screw-threaded shank. 1n the rear face of jaw C, surrounding said aperture, there is also an annular recess, C, adapted to receive hub B D designates a clamping-nut, having a suitable handle, d, and adapted to be applied to said screw-threaded shank of the bolt.

The face of rear jaw, A, is provided with parallel curvilinear ribs E, and at the top with a broader reversely-curved rib, E. All of said ribs stand out equally from said jaw, and have flattened faces parallel thereto. The jaws A C are made of cast-iron or any other suitable material.

In using said vise I first remove nut D and jaw C, then pass the circular saw over the threaded part of the bolt and hub B until it comes in contact with the outer face of block B. I then replacejaw C upon hub B apply nut D, and screw said nuthome, clamping the saw between jaw C and ribs E E. These ribs hold the periphery of the saw away from the face of jaw or wall A, and thus prevent the set of the teeth from being affected by said jaw A during filing.

The recess or guideway A and slot at, in cooperation with block B and cylindrical part I afford convenient means for ad'ustin 'aw Having thus fully described my invention, :1

what I claim as new, and desire to protect by Letters Patent, is-

1. In a vise for circular saws, the combination, with a fixed jaw, ofa movable jaw vertically adjustable thereon, for the purpose set forth.

2. In combination with jaw A, having ribs E on its face, the movablejaw G and suitable clamping devices.

3. In combination with jaw A, vertically channeled and slottechas described and movable jaw G, the bolt B, provided with an eccentric elliptical block, substantially as set forth.

4. The bolt B, having the parts b b b B B formed in one piece therewith or attached I 5 thereto, in combination with the jaws A O and nut D, substantially as set forth.

In testimony whereof Iaffix my signature in presence of two witnesses.

S. OLIN PARKER.

Witnesses:

THEODORE F. WHITE, J r., HENRY CLAY PATTERSON. 

